<html>
<head>
    <meta charset="utf-8">
    <title>哥哥的文件上传</title>
</head>
<body><!--enctype="multipart/form-data" 有二进制数据时使用-->
<form action="file_server.php" method="post" enctype="multipart/form-data">
    <label for="file">文件名:</label>
    <input type="file" name="file" id="file"><br>
    <input type="submit" value="提交" name="submit">
</form>
</body>
</html>